| 種別 | Paper |
| 主題 | IMPROVEMENT IN ADHESION OF POLYMETHYL METHACRYLATE MORTAR TO WET ORDINARY CEMENT CONCRETE |
| 副題 | |
| 筆頭著者 | Yoshihiko OHAMA |
| 連名者1 | Katsunori DEMURA |
| 連名者2 | Sanjay NARENDRA PAREEK |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 10 |
| 号 | 2 |
| 先頭ページ | 831 |
| 末尾ページ | 836 |
| 年度 | 1988 |
| 要旨 | INTRODCTION Polymethyl methacrylate (PMMA) mortar has widely been used as finishing materials such as floorings, pavings, integral waterproofings, decorative coating and repairing materials in the construction industry because of their superior performance. The most important aspect in the applications of PMMA mortar is the drying of concrete substrates. The drying process can be eliminated by developing new primers which can produce high adhesion or bond strength even for wet ordinary cement concrete surfaces. This will not only reduce the cost but also simplify the application process. This paper deals with an improvement in the adhesion or bond strength of PMMA mortar to wet ordinary cement concrete by use of various primers. Substrates used are molded using an ordinary cement concrete with a slump of 10 cm. Specimens are prepared by jointing PMMA mortar to the wet and dry concrete substrates treated with methyl methacrylate-based primers with or without coupling agents, coupling agents and cross linking agent-based primers with silane coupling agent. The effects of the primers on the adhesion in tension of PMMA mortar to the wet and dry concrete surfaces are discussed. CONCLUSIONS (1)In no primer and MMA- based primer (without coupling agents) treatments, the adhesion in tension of PMMA mortar to wet concrete surface is about one third of that to dry concrete surface. (2)The adhesion in tension of PMMA mortar to wet concrete surface is greatly affected by the types of primer used, hence primers which have a wide range of reactivity and can produce chemical bonds to the wet concrete surface are recommended for the wet surface treatment of concrete. In particular, the use of TMPTMA- and MMA- based primers with silane coupling agent is effective for this purpose. (3) Treatments of wet concrete surface with suitable coupling againts, MMA- and TMPTMA- based primers containing the coupling agents provide a great increase in the adhesion in tension of PMMA mortar to the wet surface. |
| PDFファイル名 | 010-01-1148.pdf |